Periodic solutions of the Poincaré functional equation: Uniqueness

DOI10.1090/PROC/15682zbMath1479.39028OpenAlexW3170682948MaRDI QIDQ5164052

Hojjat Farzadfard

Publication date: 9 November 2021

Published in: Proceedings of the American Mathematical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1090/proc/15682

zbMATH Keywords

cosine functionperiodic functionduplication formulaPoincaré functional equationSchröder difference-functional equation

Mathematics Subject Classification ID

Functional equations for real functions (39B22) Iteration theory, iterative and composite equations (39B12) Iteration of real functions in one variable (26A18)

Cites Work

• Unnamed Item
• On extending solutions of a functional equation
• Eine Charakterisation des Cosinus
• Periodic solutions of the Poincaré functional equation: existence
• On a characterization of the cosine

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